Bicycle steering unit



FIG. 1 is a perspective view, assembled to a bicycle.

FIG. 2 is an enlarged front view.

FIG. 3 is an enlarged right side view; and,

FIG. 4 is an enlarged rear view.

The broken lines shown are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a bicycle steering unit, as shown and described. 